Plant physiology is the scientific study of the functioning and processes of plants, including how they grow, develop, and respond to their environment. This field of research encompasses a wide range of topics, including plant nutrition, photosynthesis, respiration, reproduction, and responses to stresses such as drought, disease, and pollution. Plant physiology aims to understand the mechanisms behind these processes at the cellular, tissue, and whole-plant levels, in order to improve crop yields, protect natural ecosystems, and develop sustainable agricultural practices. Researchers in plant physiology use a variety of methods, including molecular biology, biochemistry, and genetics, to study the complex interactions between plants and their environment.